Thank you Dutchie -- I love receiving critique for my tanks, there is ALWAYS room for improvement! I would have liked to have hidden the heaters but not sure how I could have gone about it. Obviously you can see them in the photograph but because of the angle of the tank, you don't often see them when you're actually viewing it in person.

I did think about adding some height and played around with different ways of setting up the driftwood but kept coming back to this way, as it provides numerous caves and tunnels to hide in and swim through but still gives them plenty of open swimming room, since that big sev is starting to get to the 6" range now and bulking up.